can't choose firebase user collection

Hey Community!

always great to ask questions here and improve. ๐Ÿ™Œ๐Ÿผ
I've set my authentication with firebase and created a user collection inside Firebase and also FF.

so I have "users" schema from FF and "userDetails" in Firebase. But now I'm not sure what to do with the collection inside Firebase? I watched a tutorial and it did not get clear why I have to have both.

edit: the Firebase user collection is not showing in the "set from variable" list.

and what do I do when I want to have custom fields? Like having firstName and lastName inside the registration form and collecting it to firebase to pass it to my app? I tried using display_name on my name input field but it did not work.



Thanks in advance for your help!

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